Common name: Giant butterbur
Scientific name: Petasites japonicus 蜂斗菜
Genus: Petasites 蜂斗菜屬
Family: Asteraceae or Compositae 菊科, aster , daisy, composite or sunflower family
Remarks: It is native to China, Japan, Korea and Sakhalin 庫頁島. It is planted as a garden plant in 1897 and is first recorded in the wild in 1924. It is a dioecious plant. The photo taken below are male plants.
Origin: Neophyte* (established after 1500 AD). (*It is an introduced species)
Date: 17th March
a smaller plant with flowers
A larger plant. Those green leaf-like structure are not leaves indeed, they are bracts. The whole structure above the ground is the flowering stalk. Flowers appear first and leaves appear at a later stage.
The real leaves appear later.
Leaves already appear while the flowers are still persisting at this stage.
All are male flowers.
anther (yellow) and the protuding pollen presenter
pollen presenter
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